771  
CDUS46 KSGX 150021  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
421 PM PST THU DEC 14 2023  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 14 2023...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 74 3:43 PM 82 2017 66 8 60  
MINIMUM 32R 1:44 PM 35 2007 43 -11 37  
AVERAGE 53 55 -2 49  
 
PRECIPITATION (IN)  
TODAY 0.00 2.04 2021 0.06 -0.06 0.00  
MONTH TO DATE T 0.78 -0.78 1.35  
SINCE JUL 1 2.53 2.17 0.36 4.04  
SINCE OCT 1 0.37 1.99 -1.62 3.74  
SINCE JAN 1 20.97 10.53 10.44 5.44  
 
DEGREE DAYS  
HEATING  
TODAY 12 10 2 16  
MONTH TO DATE 96 131 -35 187  
SINCE DEC 1 96 131 -35 187  
SINCE JUL 1 189 293 -104 413  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 2 0 2 0  
SINCE DEC 1 2 0 2 0  
SINCE JAN 1 1695 1967 -272 2301    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NW (320)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 9 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 2.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 61 4:00 AM  
LOWEST 18 3:00 PM  
AVERAGE 40  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 81 2013  
2017  
MINIMUM TEMPERATURE (F) 43 32 2015  
 
SUNRISE AND SUNSET  
DECEMBER 14 2023......SUNRISE 6:48 AM PST SUNSET 4:42 PM PST  
DECEMBER 15 2023......SUNRISE 6:48 AM PST SUNSET 4:43 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab CA Page Main Text Page